Updating Xenium explorer.

[EliHei2]

Thank you @senbaikang for your multi-GPU solution!  

Hi @EliHei2 I realized that the seg2explorer function is kind of out-of-date: https://www.10xgenomics.com/support/software/xenium-onboard-analysis/latest/advanced/xoa-output-zarr

The cells.zarr.zip file cannot be visualized with the XOA v3.2 data. My solution is to extract nuclei and cell coordinates as GEOJSON files and use Xenium Ranger to import them (https://www.10xgenomics.com/support/software/xenium-ranger/latest/analysis/inputs/segmentation-inputs), but that's pretty time consuming and will take additional ~10 G of hard drive space for each sample. If you can fix this, it would be wonderful!

Thank you! Qijie

Originally posted by @MiracleEaTu in #83